Blank greasing mechanism



(No Model.) 2 Sheets-Sheet 1-.

P. H. RICHARDS.

BLANK GREASING MECHANISM.

No. 851,283. J Patented Oct. 19, 1886.

m. Fig.1 5

(No Model.) 2 Shets-Sheet 2.

P. H.- RICHARDS.

BLANK GREASING MECHANISM.

No. 351,283. W 1? Patented 001;. 19, 1886.

nnuumm NITED STATES PATENT OFFICE.

FRANCIS H. RIOHARDS, OF SPRINGFIELD, MASS, ASSIGNOR OF ONEHALF TO THE PRATT 8.5 XVHITNEY COMPANY, OF HARTFORD, CONN.

BLANK-CREASING MECHANISM.

SPECIFICATION forming part of Letters Patent No. 351,283, dated October 19, 1886.

Application filed January 21, 1886. Serial No. 189,293.

To all whom it may concern:

Be it known that I, FRANCIS H. RICHARDS, a citizen of the United States, residing at Springfield, in the county of Hampden, State of Massachusetts, have invented certain new and useful Improvements in Mechanism for Oreasing EnvelopeBlanks, of which the following is a specification.

This invention relates to improvements in mechanism for creasing envelopes and other blanks of paper or similar material, the object being to furnish such a mechanism adapted to be used in and constitute a part of that class of envelope-machines in which the blanks are creased in their folding lines prior to the fold ing operation.

To this end theinvention consists in the combinations hereinafter described and claimed.

In the drawings'accompanying and forming a part of this specification, Figure 1 is a side elevation of a mechanism embodying my improvements. Fig. 2 is a top view of the lower part of the same, partially in section, in line a, Fig. 3. Fig. 3 is a vertical section in line b b, Fig. 1. Fig. 4 shows some of the parts at the beginning ofthe creasing operation. Fig. 5 showsthe same parts at a later stage of,and Fig. 6 shows them at the close of, said operation. Fig. '7 is a perspective view of the cam. Fig. 8 is a similar view of one of the sliding heads. Fig. 9 is a perspective view of an envelope blank before creasing. Fig. 10 is a similar view of the same after creasing.

Similar characters designate like parts in all the figures.

The base of the mechanism is designated by B. This has an arm, A, rising therefrom for carrying the upper die. Said arm has a hearing for a vertical slide, S, which is operated by any convenient means-as, for instance, lever L, this being pivoted in link 3, or otherwise, as preferred. It is obviously quite immaterial to my invention what devices are used to operate said slide.

The upper die, D, Figs. 1 and 3. may be formed of a single piece of metal or other hard material; but I prefer to construct itof several parts, thus: 0 is a plate, usually of cast iron, which is secured to slide S. This may be done by a rigid connection, asherein shown;

(N0 model.)

edges plate 0 is provided with creasers 5, the 5 5 lower edges of which are preferably beveled slightly, as indicated at 6, Fig. 3. These creasers are best made of steel and tempered.

The lower die is composite, and is so con structed and arranged as to have a closing and yielding movement derived from the descending upper die, after the manner described and broadly claimed in my application, Serial No. 176,433, filed September 7, 1885. Said lower die consists of four bars, 8, preferably made of hard leather or soft metal, corresponding,respectively, with the several creasers, 5. These bars have lengthwise of them a groove, into which said creasers force the paper to be operated upon for the purpose of creasing the same. To make said grooves the bars are preferably rabbetcd, substantially as shown at 9, Fig. 3, thereby forming a lower surface, 10, and an elevated border, as atll, this construction being deemed in practice preferable to a simple groove in the flat upper surface of the bar.

For the purpose of properly operating the die-sections 8 they are respectively formed on or placed in (asherein shown) a series of similar wings, N N on the short and longer sides, respectively, ofthelower die, which wings are designated collectively as wings N, and individually,without choice, as wing N, a method of reference herein adopted for other details of 8 5 the mechanism. The wings N N are respectively carried by sliding heads, those at the ends being designated by H and those at the sides by H. Heads H are constructed and arranged to be simultaneously and uniformly o moved toward and from a common center, which is the center of the lower die. This operation of the heads may, among other wellknown ways, be conveniently secured by the construction thereof shown in the drawings.

On the lower side of said head there are formed flanges 15, which fit and slide under caps 16 on the base B. A rotary reciprocating disk, 17, held in place by cap 13, is provided for operating the heads H, which each have a pin, 10o

14., fitting into the corresponding scrolls or spirally-shaped earns, 18. Said disk is readily operated, after the manner of the common scrollchuck, by a handle, 19, working in a recess formed in one side of the base. By this means the several sections of the die'may be readily and quickly adjusted to'close against the creasing-die with a uniform pressure.

The wings N are yieldinglyupheld by springs, as 21, the upward movement being limited by suitable stopsas, for instance, screws 22. Said wing N is pivoted to or under an adjustable bar or part, 28, for correcting its alignment, this part being operated in one direction by setscrews 27 and in the other by screws 25 under the caps 26, which are formed on heads H, or, if so desired, affixed thereto.

The operation of my improved creasing mechanism will be understood by referring to Figs. 4, 5, and 6. A sheet of paper, R, of proper blank form is first placed on the lower die, as in Fig. 4, resting on bar 8. The upper die is then brought down to the paper, the edge 6 pressing it down against surface 10, as in Fig, 5, at a little distance from the raised border or ledge 11. On now continuing the downward motion of said die, the bar is carried by wing N downward and sidewise, as clearly indicated by line '60, closing the ledge 11 up against the side of the creaser, as pressing the paper into the rabbeted. groove 9, as in Fig. 6. This operation being simultaneously performed on the four sides, the blank (shown plain in Fig. 9) is folded up as shown in Fig. 10, without tearing or breaking the paper. 7

It should be understood that the groove of the lower die, whether rabbeted or otherwise, may be formed in the upper surface of the wing N, thereby dispensing with the separate bar 8, these two parts being one, so far as their operation is concerned.

ism, of an upper die anda lower die, consisting of separate grooved sides pivotally supported and constructed to close toward the upper die by the movement thereof, substantially as described.

2. The combination, in a creasing mechanism, of an upper die, a lower die comprising separate parts, each yieldingly held substantially as described, said parts being respectively carried by movable heads, and mechanism, substantially as described, simultaneously operating said heads, substantially as described. v

3. The combination, in a creasing mechanism, of an upper. die, the wings N, having the respective grooved sides of the lower die, stops limiting the upward movement of said wings,

and means, substantially as described, yieldingly upholding said wings, substantially as described.

4. The combination, in a creasing mechanism, of an upper die, a part, as H, for carrying a section of the lower die, bar 28, means, substantially as described, holding and adj usting said bar, wing N, pivotally connected to I said bar, and means, substantially as described,

yieldingly upholding said wing, substantially as set forth.

FRANCIS H. RICHARDS. Witnesses:

FRANK H. PIERPONT,

CLARENCE E. BUCKLAND. 

